I'm looking for a custom IC used in the Racal 1991/2 and 1998/9 counters. Amongst other things it is used to generate the CPU clock. I know it's dead as I've tested it by sticking it into a known good counter.
In the 1992 it is IC18 and in the 1998 it is IC9 and in either case the Racal part number is 22-8403 - it's a 40 pin wide DIP. In both cases it is next to the MPU (or CPU) which is an MC146805E2, which I may also need. Does anyone have an otherwise junker counter with these parts available? Regards, David Partridge _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
